Citations:yestersol

Adverb: "on the sol before the present one"

 * 1991 — Kathleen Morgan, Heart's Lair, Leisure Books (1991), ISBN 9780843931228, page 362:
 * "Then it's decided. I spoke with your father yestersol. He gave his whole-hearted approval.
 * 2001 — Mary Turzillo, "Mars is No Place for Children", in Nebula Awards Showcase 2001: The Year's Best SF and Fantasy Chosen by the Science Fiction and Fantasy Writers of America (ed. Robert Silverberg), Houghton Mifflin Harcourt (2001), ISBN 9780151005819, page 61:
 * But yestersol he took Mother into the old middle-pressure greenhouse (the little one they built when they first arrived here) and got her involved in a long discussion.
 * 2011 — Fredrick James Terriere, End of Man, Xlibris (2011), ISBN 9781465341501, page 530:
 * Yang had made an announcement yestersol about the upcoming ceremony.

Noun: "the sol before the present one"

 * 2003 —Sue Vorenberg, "Mars Central", Albuquerque Tribune, 19 December 2003:
 * "We'll basically be waking up in the Mars morning, which will be 47 minutes later each day, and uploading our commands from 'yestersol,'" he said.
 * 2004 —"Eagle Eye on Opportunity's Crater", Astrobiology Magazine, 23 March 2003:
 * After a slightly slippery start yestersol, Opportunity made it out of "Eagle Crater" on sol 57, which ends at 8:45 p.m. PST on March 22.
 * 2011 —Andrew Kessler, Martian Summer: Robot Arms, Cowboy Spacemen, and My 90 Days with the Phoenix Mars Mission, Pegasus Books (2011), ISBN 9781453215074, unnumbered page:
 * Yestersol's plan asked Phoenix to deliver the dirt that was already in the scoop into MECA's optical microscope and wet chemistry lab.